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Fix encoding handling in xml binary input function. If the XML header didn't

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specify an encoding explicitly, we used to treat it as being in database
encoding when we parsed it, but then perform a UTF-8 -> database encoding
conversion on it, which was completely bogus. It's now consistently treated as
UTF-8.
This commit is contained in:
Heikki Linnakangas 2009-09-04 10:49:50 +00:00
parent e01fdca9f7
commit 691efa1500
1 changed files with 21 additions and 14 deletions
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35
src/backend/utils/adt/xml.c
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/backend/utils/adt/xml.c,v 1.68.2.10 2009/06/10 03:44:42 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/xml.c,v 1.68.2.11 2009/09/04 10:49:50 heikki Exp $
*
*-------------------------------------------------------------------------
*/
@ -111,7 +111,7 @@ static int parse_xml_decl(const xmlChar * str, size_t *lenp,
static bool print_xml_decl(StringInfo buf, const xmlChar * version,
pg_enc encoding, int standalone);
static xmlDocPtr xml_parse(text *data, XmlOptionType xmloption_arg,
bool preserve_whitespace, xmlChar * encoding);
bool preserve_whitespace, int encoding);
static text *xml_xmlnodetoxmltype(xmlNodePtr cur);
#endif /* USE_LIBXML */
@ -186,7 +186,7 @@ xml_in(PG_FUNCTION_ARGS)
* Parse the data to check if it is well-formed XML data. Assume that
* ERROR occurred if parsing failed.
*/
doc = xml_parse(vardata, xmloption, true, NULL);
doc = xml_parse(vardata, xmloption, true, GetDatabaseEncoding());
xmlFreeDoc(doc);
PG_RETURN_XML_P(vardata);
@ -275,7 +275,8 @@ xml_recv(PG_FUNCTION_ARGS)
char *newstr;
int nbytes;
xmlDocPtr doc;
xmlChar *encoding = NULL;
xmlChar *encodingStr = NULL;
int encoding;
/*
* Read the data in raw format. We don't know yet what the encoding is, as
@ -296,7 +297,15 @@ xml_recv(PG_FUNCTION_ARGS)
str = VARDATA(result);
str[nbytes] = '\0';
parse_xml_decl((xmlChar *) str, NULL, NULL, &encoding, NULL);
parse_xml_decl((xmlChar *) str, NULL, NULL, &encodingStr, NULL);
/*
* If encoding wasn't explicitly specified in the XML header, treat it as
* UTF-8, as that's the default in XML. This is different from xml_in(),
* where the input has to go through the normal client to server encoding
* conversion.
*/
encoding = encodingStr ? xmlChar_to_encoding(encodingStr) : PG_UTF8;
/*
* Parse the data to check if it is well-formed XML data. Assume that
@ -308,9 +317,7 @@ xml_recv(PG_FUNCTION_ARGS)
/* Now that we know what we're dealing with, convert to server encoding */
newstr = (char *) pg_do_encoding_conversion((unsigned char *) str,
nbytes,
encoding ?
xmlChar_to_encoding(encoding) :
PG_UTF8,
encoding,
GetDatabaseEncoding());
if (newstr != str)
@ -674,7 +681,8 @@ xmlparse(text *data, XmlOptionType xmloption_arg, bool preserve_whitespace)
#ifdef USE_LIBXML
xmlDocPtr doc;
doc = xml_parse(data, xmloption_arg, preserve_whitespace, NULL);
doc = xml_parse(data, xmloption_arg, preserve_whitespace,
GetDatabaseEncoding());
xmlFreeDoc(doc);
return (xmltype *) data;
@ -815,7 +823,8 @@ xml_is_document(xmltype *arg)
PG_TRY();
{
doc = xml_parse((text *) arg, XMLOPTION_DOCUMENT, true, NULL);
doc = xml_parse((text *) arg, XMLOPTION_DOCUMENT, true,
GetDatabaseEncoding());
result = true;
}
PG_CATCH();
@ -1177,7 +1186,7 @@ print_xml_decl(StringInfo buf, const xmlChar * version,
*/
static xmlDocPtr
xml_parse(text *data, XmlOptionType xmloption_arg, bool preserve_whitespace,
xmlChar * encoding)
int encoding)
{
int32 len;
xmlChar *string;
@ -1190,9 +1199,7 @@ xml_parse(text *data, XmlOptionType xmloption_arg, bool preserve_whitespace,
utf8string = pg_do_encoding_conversion(string,
len,
encoding ?
xmlChar_to_encoding(encoding) :
GetDatabaseEncoding(),
encoding,
PG_UTF8);
xml_init();